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1. Define resistance of a mateial. Write the unit of resistance. 2. How do you determine the series resistance (Rs) of the PV module? 3. How do you determine the shunt resistance (Rsh) of the PV module?

1. Define resistance of a mateial. Write the unit of resistance. 2. How do you determine the series resistance (Rs) of the PV module? 3. How do you determine the shunt resistance (Rsh) of the PV module?

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1. Define resistance of a mateial. Write the unit of resistance.

2. How do you determine the series resistance (Rs) of the PV module?

3. How do you determine the shunt resistance (Rsh) of the PV module?

Carrent t Skope-a-IR, Ammeter Elve E Voltmeter PV Module Potentiometer as Electrical Load Voltage Figure 4. Circuit to determine E-l curve of a PV Module Figure 3. Finding of resistor R, from the E-l curve of a PV cell Voltage (E) Current (I) GRAPH PLOTTING Volts 144.8 How to Plot Points on the Graph Sheet? https:/lyoutu.bej6LGxJhckk 2 145.2 4 143.1 142.1 7 140.4 8 128.0 9 92.2 10 31.11 Voltage (V) | Current (I)
Transcribed Image Text:Carrent t Skope-a-IR, Ammeter Elve E Voltmeter PV Module Potentiometer as Electrical Load Voltage Figure 4. Circuit to determine E-l curve of a PV Module Figure 3. Finding of resistor R, from the E-l curve of a PV cell Voltage (E) Current (I) GRAPH PLOTTING Volts 144.8 How to Plot Points on the Graph Sheet? https:/lyoutu.bej6LGxJhckk 2 145.2 4 143.1 142.1 7 140.4 8 128.0 9 92.2 10 31.11 Voltage (V) | Current (I)
Introducion • The series resistance (R.) of a PV module is mainly • The shunt resistance (Ra) represents a parallel high- the sum of the contact resistance on its front and back conductivity path across the p-n junction. • Shunt resistance is due to non-idealities, mainly surfaces and the resistances of the bulk and the diffused layers on the top. impurities near the p-n junction, which cause partial • LIKE all other known generators of electrical power, PV modules possess some internal series resistance. * This internal series resistance is very important to shorting of the junction. • If an impurity can join the front and back sides of the solar cell then it is responsible for shunt resistance. determine the E-I characteristics of most of these power generators. • The performance of the PV module on the values of Ra and R.. Apparatus required with Specifications • Therefore, R, and R, both need to be recognized and understood in Specifications Quantity S. Apparatus Name No. order to analyze the cell and module performance. 1. PV module 0-10 V 1 * An equivalent circuit is nothing but a combination of elements that 2. Ammeter 0-200mA 1 best represents the actual terminal characteristics of the device. 3. Voltmeter (D.C) 0-20V 1 * In a simple language, it simply means the diode in the circuit can be 4. Potentiometer 500 0; 2w 1 replaced by other elements without severely affecting the behavior 5. Connecting wires 10 of circuit. FIGURES Al volage E Rs Cument /SH Slope--R, Elcurve PRSH E Volnge Figure 1. Actual oquivalent diagram of a PV Cell with Electrical Load Figure 2. Finding of resistor Rp (R) from the E-l curve ofa PV cell
Transcribed Image Text:Introducion • The series resistance (R.) of a PV module is mainly • The shunt resistance (Ra) represents a parallel high- the sum of the contact resistance on its front and back conductivity path across the p-n junction. • Shunt resistance is due to non-idealities, mainly surfaces and the resistances of the bulk and the diffused layers on the top. impurities near the p-n junction, which cause partial • LIKE all other known generators of electrical power, PV modules possess some internal series resistance. * This internal series resistance is very important to shorting of the junction. • If an impurity can join the front and back sides of the solar cell then it is responsible for shunt resistance. determine the E-I characteristics of most of these power generators. • The performance of the PV module on the values of Ra and R.. Apparatus required with Specifications • Therefore, R, and R, both need to be recognized and understood in Specifications Quantity S. Apparatus Name No. order to analyze the cell and module performance. 1. PV module 0-10 V 1 * An equivalent circuit is nothing but a combination of elements that 2. Ammeter 0-200mA 1 best represents the actual terminal characteristics of the device. 3. Voltmeter (D.C) 0-20V 1 * In a simple language, it simply means the diode in the circuit can be 4. Potentiometer 500 0; 2w 1 replaced by other elements without severely affecting the behavior 5. Connecting wires 10 of circuit. FIGURES Al volage E Rs Cument /SH Slope--R, Elcurve PRSH E Volnge Figure 1. Actual oquivalent diagram of a PV Cell with Electrical Load Figure 2. Finding of resistor Rp (R) from the E-l curve ofa PV cell
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